Donjoy OA REACTION WEB Patellofemoral BracesDonjoy® OA REACTION WEB Patellofemoral Braces


The Donjoy OA REACTION WEB patellofemoral brace is a responsive, webbed approach to knee pain that gives you a distinct alternative to the basic knee sleeve.

Developed by world renown orthopedic surgeon, Dr. William Nordt, the OA REACTION WEB can help decrease knee pain and increase function to get you back to your active lifestyle. The elastomeric web is an innovative solution that absorbs shock, disperses energy and shifts pain away from your patellaand worn tibiofemoral compartment.

This comfortable, easy to apply solution takes the shape of your knee, with an improved design engineered for better fit and comfort.

It is prescribed for some cases of anterior knee pain by applying pressure to the peripatella tissues.


Try it for Hoffa's Posterior Fat Pad Syndrome, Patella Tendonitis, Quadriceps tendonitis, Chondromalacia Patellae and on occasions patients with Torn Ligamantum Mucosum.

Use it as a gentle off load for the affected medial or lateral compartment. It can be bent to adjust the amount of off-load, to help relieve pressure on a painful knee compartment.

Information on Ordering

How do you avoid a mistake when ordering for your patient?

Choose the right size by marking the mid point of the patella with the patient standing in the schuss position. Measure the circumference of the thigh at 15cm above this point.

Before you choose from the drop down menu write down which side (Left or Right). Then which compartment is the most symptomatic with pain. Is it the inside (Medial) or outside (Lateral). Then finally size after you have made the measure stated above:

Part Number = Size Measurement & Off_Load
82-7427-1 = 13-15.5" (33-39 cm) LT MEDIAL/RT LATERAL, XS
82-7427-2 = 15.5-18.5" (39-47 cm) LT MEDIAL/RT LATERAL, S
82-7427-3 = 18.5-21" (47-53 cm) LT MEDIAL/RT LATERAL, M
82-7427-4 = 21-23.5" (53-60 cm) LT MEDIAL/RT LATERAL, L
82-7427-5 = 23.5-26.5" (60-67 cm) LT MEDIAL/RT LATERAL, XL
82-7427-6 = 26.5-29.5" (67-75 cm) LT MEDIAL/RT LATERAL, XXL

82-7426-1 = 13-15.5" (33-39 cm) RT MEDIAL/LT LATERAL, XS
82-7426-2 = 15.5-18.5" (39-47 cm) RT MEDIAL/LT LATERAL, S
82-7426-3 = 18.5-21" (47-53 cm) RT MEDIAL/LT LATERAL, M
82-7426-4 = 21-23.5" (53-60 cm) RT MEDIAL/LT LATERAL, L
82-7426-5 = 23.5-26.5" (60-67 cm) RT MEDIAL/LT LATERAL, XL
82-7426-6 = 26.5-29.5" (67-75 cm) RT MEDIAL/LT LATERAL, XXL
82-7426-7 = 29.5-32" (75-81 cm) RT MEDIAL/LT LATERAL, XXXL
82-7427-7 = 29.5-32" (75-81 cm) LT MEDIAL/RT LATERAL, XXXL


• Single malleable aluminium upright
• Built with 6 degrees of valgus correction for a medial offload and varus correction for a lateral offload.
• Can be bent to adjust the amount of off-load, to help relieve pressure on a painful knee compartment.
• Combined actions of the valgus upright and the condyle pad help to mechanically shift the compressive load away from the affected compartment
• Shifting the load to the healthy compartment helps alleviate OA pain and increase walking distance.
• Patented silicone "web" technology. Medical grade silicone extends and retracts with knee movement, absorbing and releasing kinetic energy.
• Provides shock absorption, anterior knee pain relief and mild medial or lateral compartment off-load
• The shape of the patella cutout is specifically designed to help realign the patella in the femoral groove while supporting the surrounding plical folds.
• Patented, integrated silicone condyle pad helps as the fulcrum for gentle, comfortable off-loading of the opposite affected compartment.
• Hexagonal design on the integrated silicone condyle pad creates an air pocket interface for a non slip effect.
• Easy contact closure strap
• Elastomeric Web acts to dynamically stabilise the patella and the peripatella tissues like the plicae, tendons and Hoffa's fat pad on all sides, bringing the patella into proper tracking position to reduce pain for patients with general patellofemoral instabilities.
• Dual-axis hinges that are flexible, creating synergy with the elastomeric web for optimal fit and support, and providing energy dispersion to the knee.
• Sustained Comfort of the open framework of the elastomeric web, in combination with the mesh backing, creates a comfortable fit and a breathable solution for relief of anterior knee pain.
• The adjustable strapping at the top and bottom allow uniform pressure across the knee working in tandem with the elastomeric web to stay in place on the knee for all-day usage.
• Better Fit and Comfort from a new back pad fits and conforms better to the knee, and is softer, more breathable and more lightweight.

Anterior Knee Pain

Physiotherapy Central London is the term patients search when seeking the top physiotherapy advice on anterior knee pain. asked Richard Misselbrooka Physiotherapist in at Wilbrham Place Practice Sloane Square Central London his opinion on the indications for this patella brace for the athletes he looks after. Richard looks after the stars of stage and screen, professional and amateur sportsmen and women.

Richard told that "anterior knee pain is an umbrella term and not a diagnosis. One should try and reach the diagnosis through history and examination before offering treatment even if this means an MRI first".

He said: "These New Donjoy REACTION WEB Patellofemoral Braces really helps the patient with well localised anterior knee pain, a normal MRI scan but the clinical suspicion of Plica or Hoffa's fat pad syndrome. If there is damage to the chondral surface from the plica or Hoffa's impingment already then keyhole surgery is indicated. Before that very many more patients respond to physiotherapy, McConnell taping and other techniques".

Richard said: " When the post run MRI is normal and no chondral surface damage is yet evident I find that a combination of patella taping and physiotherapy works well".

He said: "A proportion of patients cannot get on with patella taping due to an allergy or inflammation of the skin from the tape. If the tape is acceptable then I ask patient to try it for at least six weeks before review. If taping cannot be used I try either Procare Surround® Patella Strap, the New Donjoy REACTION WEB Patellofemoral Brace or the Drytex Lateral "J" Knee Support as an alternative".

He said "In the patients with benefit while the tape is on but relapse without it I then I tend to refer the athlete to a Consultant Orthopaedic Surgeon for arthroscopy and excision of the plica or synovial tag which by then is often too large to receive benefit from tape or brace. With a patient suffering persistent pain and chondromalacia, arthroscopic decompression is well tolerated when modern keyhole techniques are used. In well chosen individuals who have not yet suffered degenerat change keyhole surgery effects a cure of anterior knee pain. Unfortunately, late presentation of the patient means that some high pressure damage to the hyaline articular cartilage has occured which is often more difficult to cure."

My tip for patients is to break the brace in slowly. Use it for an hour only on the first day. Use it for two hours on the second day and three on the third day etc.